What are the internal microphone specifications for the Iphone 4?

I'm conducting experimental field work using my Iphone and need to include the microphone specifications in my report. Does anyone have this information at hand or know where I can find it?
Thanks in advance,
T

Hello there, TLes84.
The following is the Technical Specifications document for the iPhone 4:
iPhone 4 - Technical Specifications
http://support.apple.com/kb/sp587
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

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